Filter



Jan.Z7. 19.25. 1,524,547 s. A, GlAcoBB;

FILTER Filed Dec. 23, 1922 filtering layer.

Patented 1m27.192s.

UNITED STATES 1,524,547 PATENT yo1=1=`1cE.

SANTA A. CIIACOBBE, OF NEW YORK. N. Y.

FILTER.

Application filed December 23, 1922. Serial No. 608,738.

To all wlw/m, it may concern.; j

' Be it known that I, SANTA A. GIACQBBE, a citizen of the United States, and a resident of the city of- New York, borough of Manhattan, in the county and State of New York, have invented new and useful Improvementsin Filters, of which the following .is a full, clear, and exact description.

This invention relates to filters primarily designed for use with funnels. v

The general object of this invention is the provision of a cheap, simple and efiicient filter for mounting in funnels or the like. r

Still another object of the invention is `the provision of a filter including a plurality of filtering layers for mounting in aV funnel, the filtering layers being adapted for vshaping so as to form an annular member which lies parallel to the lfunnel wall.

These objects are accomplished by providingk a perforated. taibe, and a plurality of filtering layers for mounting in spaced relation to one another on the perforated `filtering layer .without tube, said layers .being constructed with flexible edges so that when the filter is placed in a funnel the edges of the filtering .layers bend upward forming annular members which lie parallel to the wall of the funnel.

These and other objects) of the' invention will be more clearly understood from the vfollowing detailed description and accompanying drawings.

Figure 1 is a top plan View of a filtering layer with a portlon broken away to show its component parts;

Figure 2 is a 'vertical section throu h the filter showing it positioned in a funne Fi re 3 is a perspective view of the its supporting members, A Referring to the above-mentioned draw- 'which it is to be seated.

ings, a disk of filter mass 10 is shown provided With an upturned edge 11. The disk 10 is not necessarily formed with the upturned edge 11 rigidly in position, but the disk is flexible and the edges may be turned upward to conform to any desired shape. When used with a funnel suoli upturned edges lie along. the funnel wall. and thus give better Contact with the wall than a disk cutv the size of a section of the funnel in In the case of a disk cut the size of a section of the funnel, Yshould there be any irregularities in the funnel structure, a channel between the Y. funnel wall and the disk might result.

This'would result in a portion'of the substance it is -desired to filter out of the solution passing through the channel. lWith a filter of this construction the upturned edges of the filter disk lie along .the wall of the funnel and fit into any irregular lshaped portions of the funnelwall. This filter is for use with a funnel provided with an air tube and so the disk 10 is provided with an opening 12 in the center which fits tightly over the air tube 18 shown in Figure 2.

In using the filter disk 10 with a funnel 16, two perforated plates 14 and 15 would be provided in conjunction with fthe disk. The plate 14 serves to support the filter disk 10 in a horizontal plane, allowing the upturned edges 11 to lie along the wall of the funnel 16. The perforated plate 15 rests on the filter disk 10, forcing it into engagement with the perforated plate 14 and pressing the upturned edges tightly against the wall of the funnel.

The tube 13 used in. conjunction with the filter disks 11 is provided with a plurality of perforations 17 and prongs 18 for supporting it in a funnel or the like. In assembling thefilter, thefilter vdisks 11 arev mounted on the tube 13 and aced from one another. The perforations 1 are so located that when the filter disks 1'1 are properly spaced from one another perforations occur between the filter disks and below the bottom filter disk. If only one filter disk is mounted` on the tube then it would be n to locate all the perforations 17 below said filter disk. When the filter is vpositioned in a funnel, as shown in Fi re 2, a. chamber 19 is formed between the ter disks 11 and a'chamber 20 is formed below the bottom filter The perforations the solution to fiow freely.

'embodiment of 17 establish communication between the chambers and the tube 13.

In using a filter of this type, when the solution to be filtered is poured onto the upper filter disk, a certain amount of air is trapped in the chambers 19 and 20. This normally decrease the efiiclency of the filter.

lHowever, in a filter of this type the air escapes through the perforations 17 and the tube 13 and thus allows the liquid 'from I would state in conclusion that while the illustrated example constitutes a practical my invention I do not limit myself strictly to the exact details herein illustrated since manifestly the same can be considerably varied wit-hout departing from the spirit 1of the invention as defined in the appended Claims.

Claims:

1. A filter of the character described for use with tunnels, comprising a plurality of filtering layers mountedin the funnel in spaced relation to one another forming chambers between said filtering layers, and

a tube extending through said filterin layers, the portions of the tube located between rthe filtering layers and below the bottom filtering layer being perforated.

-2. A filter ofthe character described, comprising a tube, filtering layers mounted on said tube and spaced from one another, the

1 portions of said tubey located between the ing filtering layers and below the lowest filter? 4ing layer being perforated, and means for supporting the tube in position in the filterlayers.

`3. In a filter of the including a plurality of` filtering layers spaced from one another, a perforated tube air trapped in the chamberli, 19 and 20 would l character described.l

for-mounting in the filtering layers to locate perforations between each filtering layer and below the bottomfiltering layer.

4. As a new article of manufacture, a filter of the class` described for .use with :tunnels comprising a plurality of filterin ayers liavingopenings extendin throug their centers and provided wit flexible edges to fold upward Nalong' the wall of the funnel, a perforated an' tube for mounting in the openings through the centers of the lfiltering layers locating perforations between each pair` of layersand below the bottom layer,and means for supporting the tube in position.

5. A filter for use with funnels, comprising a filtering layer for mounting in said funnel, a perforated tube for mountin' in said filtering layer. locating the orations below the filtering layer, an means for supporting the tube in position inthe filtering layer.

6. In a filterof the character described including an air tube, a filter layer comprising a disk of filter mass having an opening 1n its center for receiving the air tube,

g flexible edges capable of being bent to any and'rigid members for mounti desired shape, ing on the disk to support it.

, 7. A filter of the character described, comprising .a perforated tube, a pluralit of filtering layers each, including a diei of filtering material having flexible edges capable of being bent to any shape, and rigid supporting membersmoimted 1n spaced relation on said perforatedtube so that perforations are located between the layers and below the bottom layer, and means provided. on the tube `for supporting it in a container.

SANTA A, GIACOBB. 

